Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated

Planting zone for 35807 — Huntsville, AL

ZIP code 35807 (Huntsville, Madison County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is April 4 and the first fall frost October 30.

Where ZIP 35807 is

tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone8a10 to 15 °F
Coldest night−12.2 to −9.4 °C
Last frostApr 4
First frostOct 30
2012 zone7b

Was 7b on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 8a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Huntsville, AL…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Huntsville, AL

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 4median — 50% chance of a later frost
Safe for tender plantsApril 20only 10% chance of frost after
First fall frostOctober 30median — 10% chance by Oct 17
Growing season210 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 24 and returns around November 8.

From the NOAA station Owens Cross Roads 3s, AL — 13 miles away, elevation 591 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 35807

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 21 – Mar 7
SpinachSow outdoors · Feb 21 – Mar 14
Broccoli, cabbageStart indoors · Jan 24 – Feb 7
Broccoli, cabbageTransplant · Mar 14 – Mar 28
Onion setsPlant outdoors · Mar 7 – Mar 21
PotatoesPlant outdoors · Mar 14 – Mar 28
LettuceSow outdoors · Mar 7 – Mar 21
Carrots, beetsSow outdoors · Mar 14 – Mar 28
TomatoesStart indoors · Feb 7 – Feb 21
TomatoesTransplant · Apr 11 – Apr 25
Peppers, eggplantStart indoors · Jan 24 – Feb 7
Peppers, eggplantTransplant · Apr 18 – May 2
BeansSow outdoors · Apr 11 – Apr 25
Sweet cornSow outdoors · Apr 11 – Apr 25
Cucumbers, squashSow outdoors · Apr 11 – Apr 25
Fall lettuce, spinachSow outdoors · Sep 4 – Sep 18
GarlicPlant cloves · Oct 16 – Nov 20
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 4) and first fall frost (Oct 30) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 35807 came on Feb 17 — 4 days earlier than the 1991–2020 average (Feb 21).

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Soil in Huntsville, AL

The soil mapped at the center of ZIP 35807 is Barfield — silty clay, well drained.

TextureSilty clayholds water and nutrients; slow to drain and warm up
pH7.0neutral; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter3%moderate
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Rockland, limestone, steep.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 35807; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Huntsville, AL

Summer high88 °Faverage high, July
Winter low30 °Faverage low, January
Hot days49days a year at 90 °F or more
Freezing nights78nights a year at 32 °F or less
Growing degree days4,600base 50 °F — the season’s usable heat
Longest day14 h 29 mindaylight on June 21
Shortest day9 h 49 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation54.2 inper year, rain and melted snow

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 50 °F, low 30 °F 50°30° JanFebruary: average high 55 °F, low 32 °F 55°32° FebMarch: average high 63 °F, low 39 °F 63°39° MarApril: average high 71 °F, low 46 °F 71°46° AprMay: average high 78 °F, low 56 °F 78°56° MayJune: average high 86 °F, low 64 °F 86°64° JunJuly: average high 88 °F, low 68 °F 88°68° JulAugust: average high 88 °F, low 67 °F 88°67° AugSeptember: average high 84 °F, low 59 °F 84°59° SepOctober: average high 74 °F, low 47 °F 74°47° OctNovember: average high 62 °F, low 37 °F 62°37° NovDecember: average high 53 °F, low 32 °F 53°32° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 4.77 in precipitation 4.8 JanFebruary: 4.25 in precipitation 4.3 FebMarch: 5.52 in precipitation 5.5 MarApril: 5.24 in precipitation 5.2 AprMay: 4.63 in precipitation 4.6 MayJune: 3.93 in precipitation 3.9 JunJuly: 4.71 in precipitation 4.7 JulAugust: 3.65 in precipitation 3.6 AugSeptember: 4.77 in precipitation 4.8 SepOctober: 2.81 in precipitation 2.8 OctNovember: 4.04 in precipitation 4.0 NovDecember: 5.87 in precipitation 5.9 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Owens Cross Roads 3s, AL (13 mi away); precipitation: Huntsville 3.7 Ene, AL (2 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8a.

358098a
Huntsville, AL · <1 mi
358128a
Huntsville, AL · <1 mi
358138a
Huntsville, AL · <1 mi
358148a
Huntsville, AL · <1 mi
358158a
Huntsville, AL · <1 mi
358948a
Huntsville, AL · <1 mi
358978a
Huntsville, AL · <1 mi
358018a
Huntsville, AL · 3 mi

All 23 ZIP codes in Huntsville → · Alabama planting zones →

Questions about 35807

What planting zone is ZIP code 35807?

ZIP code 35807 (Huntsville, AL) is in USDA hardiness zone 8a on the 2023 map: the coldest night of an average winter reaches 10 to 15 °F (−12.2 to −9.4 °C).

When is the last frost in Huntsville, AL?

The median last spring frost (32 °F) near 35807 is April 4; after April 20 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Owens Cross Roads 3s station.

When is the first frost in Huntsville, AL?

The median first fall frost near 35807 is October 30, giving a median frost-free growing season of 210 days.

When should I plant tomatoes in 35807?

Start tomato seeds indoors around Feb 7 – Feb 21 and set transplants outside around Apr 11 – Apr 25, one to three weeks after the median last frost.

How much rain and snow does 35807 get?

About 54.2 inches of precipitation a year (NOAA 1991–2020 normals, Huntsville 3.7 Ene station).

How hot do summers get in Huntsville, AL?

The average high peaks at 88 °F in July, with about 49 days a year at 90 °F or more.

What kind of soil does 35807 have?

The USDA soil survey maps Barfield at the center of ZIP 35807: silty clay, well drained, pH about 7.0 (neutral).

Did spring come early in Huntsville, AL in 2026?

Spring leaf-out near 35807 came on Feb 17 in 2026, 4 days earlier than the 1991–2020 average (Feb 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Huntsville, AL?

Intermediate onions: the longest day near 35807 is 14 h 29 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 35807 change?

Yes. The 2012 USDA map put 35807 in zone 7b; the 2023 map puts it in zone 8a. The newer map uses 1991–2020 data and more weather stations.